Air delivery tube



FIG. 1 is a perspective view, from the front, top, right side, of an air delivery tube showing a first embodiment according to our new design;

FIG. 2 is a perspective view from the front, bottom, right side, thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a right side view thereof;

FIG. 9 is another perspective view; and,

FIG. 10 is still another perspective view.

The broken lines in the drawings illustrate portions of the air delivery tube that form no part of the claimed design. 

CLAIM The ornamental design for an air delivery tube, as shown and described. 